71M6521DE/71M6521FE
Energy Meter IC
DATASHEET
JANUARY 2008
Total Number of
LCD Segment Pins
Including SEG0-
SEG18
Total Number of DIO
DIO Pins in Addition
Pins Including DIO1,
to DIO1-DIO2
SEG in Addition to
SEG0-SEG18
LCD_NUM
DIO2
0
1
None
41
19
20
21
22
22
23
24
25
26
26
27
27
28
29
30
31
32
33
34
4-11,14-17, 19-21
18
17
16
15
15
14
13
12
11
11
11
10
9
4-11, 14-17, 19-20
2
40-41
4-11, 14-17, 19
4-11, 14-17
4-11, 14-17
4-11, 14-16
4-11, 14-15
4-11, 14
4-11
3
39-41
4
39-41
5
37, 39-41
6
36-37, 39-41
35-37, 39-41
34-37, 39-41
34-37, 39-41
34-37, 39-41
31, 34-37, 39-41
30-31, 34-37, 39-41
29-31, 34-37, 39-41
28-31, 34-37, 39-41
27-31, 34-37, 39-41
26-31, 34-37, 39-41
25-31, 34-37, 39-41
24-31, 34-37, 39-41
7
8
9
4-11
10
11
12
13
14
15
16
17
18
4-11
4-10
4-9
4-8
8
4-7
7
4-6
6
4-5
5
4
4
None
3
Note: LCD segment numbers are given without CKTEST/SEG19, E_RXTX/SEG38, E_TCLK/SEG33, and E_RST/SEG32.
Table 62: LCD and DIO Pin Assignment by LCD_NUM for the QFN-68 Package
Page: 64 of 101
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TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
